Julien H.

Data Scientist

1035 dollar

Mon expérience

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OpenClassrooms MentorsJune 2019 - Présent

I help aspiring Data Scientist & Machine Learning Engineer to achieve their goals !
I guide 8 students through 9 projects about Data Mining, Machine Learning & Deep Learning.
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Labs on MarsOctober 2019 - Présent

Labs on Mars provides Data Science consulting services and custom tools development, applied to search engine optimization (SEO)

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Jagger & LewisAugust 2018 - May 2019

My main goal is to develop the best AI-system for Dog's Activity Recognition. Our purpose is not just to have the best AI-system but to propose the best smart collar for dogs on the market !

In parallel I am developing the research and development part in order to explore other deep learning approaches. To success theses tasks I am working with a Machine Learning Engineer who is supporting me on the project related to the data.

In addition to the implementation of the machine learning project end-to-end, I am working on the setting up of tools to improve the project management, the data visualization and the workflow of our data. All of the tools implemented are open source.
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OVHDecember 2016 - July 2018

I focused on the implementation of a recommender system (Products approach), Association Rules, scoring (of interest) and segmentations with the objective of developing the CRM.

I have implemented the time series forecasting with RNN with the aim of predicting the activity at the call center to scale the teams. I have also contributed to the implementation of a Proof Of Concept about the speech to text based on the algorithm WaveNet (DeepMind). I was able to use NLP’s algorithms in order to explore and to do an analysis of the surveys data.

About the tech I use: Pyspark, Hive, Dataiku,Tensorflow and Python
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FreelanceFebruary 2017 - June 2018

Consulting Data Scientist - Jagger & Lewis
May 2018 - August 2018
- Set up Machine Learning & Deep Learning models to improve the quality of the solution

Mentor Data Scientist - Self Employed
May 2018 - June 2018

Trainer at Quantmetry, Data Science Consulting
December 2017
3 training days about the Machine Learning with Python and Big Data with Pyspark:
- Algorithm of Machine Learning (Classification - Regression - Clustering)
- Use cases (Risk Prediction)
- Good practices (Exploratory Data Analysis)
- Hadoop - Spark - Churn Prediction with Pyspark (MLlib)

Data Scientist at Pitchr
March 2017 – November 2017
Implementation of an recommender system - Collaborative Filtering Approach - to sort smarter the people around the Pitchr's users. The goal was to sort a list of people caracterized by theirs professional skills in order to increase the number of connections between the users.
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OpenClassrooms MentorsMarch 2017 - November 2017

Mentoring of students on the Central Supelec Data Scientist Course. Through projects about Machine Learning , DeepLearning, Recommander System and technological survey.
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Sopra SteriaJanuary 2015 - December 2016

COFIDIS - CRM Analytics (January 2016 à December 2017)
- Implementation of the Data Management Platform

CREDIT AGRICOLE NDF - CRM Analytics (January 2015-January 2016)
- Data Muggling with the platform Cloudera (Hive, Spark...)
- Implementation of ML's algorithm
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Créatis (Groupe Cofidis Participation)December 2012 - May 2014

- Reporting to monitor the activity
- Production of KPI to pilot the activity
- Setting up the calculation of bonuses for employees
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Brady CorporationMarch 2012 - August 2012

- Implementation of Reactivation's score
- Monitoring of Key account
- Rewriting SPSS programs in SAS
- Optimization

Mes compétences

Analysis methods and tools

Agile Methodology


CRM, Machine Learning

IT Infrastructure



Python, SQL

Machine Learning

Deep learning, TensorFlow, Neural networks, Convolutional Neural Networks

Big Data

Hadoop, Big Data, Data Visualization, Hive, Spark


RNN, Data Science, Marketing Strategy, Natural Language Processing (NLP), Teamwork

Business Intelligence


Mes études et formations

Certificats - Coursera

Certificats - IBM

Licence, Mathématiques et informatique - Université d'Artois

Master ISN - Ingénieur Statistique et Numérique, Mathématiques et statistiques - Université Lille I

Certificats - DataCamp